PitBull SafETy-LOc SL60, SL70, SL80 and SL90

Do not install, operate or service this product unless you have read and understand the Safety Practices, Warnings, and Installation and Operating Instructions contained in this manual. Failure to do so could result in death or serious injury.

User's ManualInstallation, Operations,Maintenance and Parts

Part No. 824-231E

This manual applies to PitBull® SafETy-LOc® vehicle restraints manufactured beginning December 29, 2006 with the serial numbers 111646 and higher.

Vehicle RestraintsPitBull® SafETy-LOc®

SL60, SL70, SL80 and SL90

2 824-231E — SL60-90 PitBull® Safety-Loc® february 2007©2007 4front Engineered Solutions, Inc.

adjustments Proximity Sensor Locations .................................32 Restraint Stored Sensor (LS1) .............................33 Restraint Raised Sensor (LS2) ............................34 Trailer Present Sensor (LS3) ...............................35 RIG Sensor Bar (LS4) ..........................................36Gas Spring Replacement .........................................37Electrical Schematic 6003333 SL60, SL70 and SL80 ..........................39 6003301 SL90 ......................................................40Parts List Vehicle Restraint ..................................................41 control Panel .......................................................44 Input/Output Boards .............................................46 Exterior Sign and Lights .......................................48Warranty Information ................................................49Distributor Information ..............................................52

Introduction .................................................................2Safety Signal Words ...................................................2Safety Practices..........................................................3Installation .................................................................4Components and Specifications ...............................15Electrical System Operation .....................................16Operating Instructions Engaging Vehicle .................................................17 Releasing Vehicle ................................................18 No RIG (rear impact guard) .................................18 High RIG (rear impact guard) ...............................18auxilliary PLc modules.............................................19Keypad Programming Instructions ...........................20Preventive Maintenance ...........................................22 Lubrication ...........................................................23Troubleshooting Guide .............................................24PLc Diagnostics .......................................................28

Table of conTenTs

InTRodUcTIonWelcome and thank you for choosing this vehicle restraint from SERcO®.This User’s Manual contains information that you need to safely install, operate and maintain the vehicle restraint. It also contains a complete parts list and information about ordering replacement parts. Please keep and read this User’s Manual before using your new vehicle restraint.

You may find safety signal words such as DANGER, WARNING, or CAUTION throughout this Owner’s Manual. Their use is explained below:

Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.

Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.

Indicates a potentially hazardous situation which, if not avoided may result in minor or moderate injury.

Caution used without the safety alert symbol indicates a potentially hazardous situation which, if not avoided, may result in property damage.

This is the safety alert symbol. It is used to alert you to potential personal injury hazards. Obey all safety messages that

follow this symbol to avoid possible death or injury.

safeTy sIgnal woRds

february 2007 824-231E — SL60-90 PitBull® Safety-Loc® 3©2007 4front Engineered Solutions, Inc.

safeTy pRacTIces

Read these safety practices before installing, operating or servicing the PitBull® SAFETY-LOC®. Failure to follow these safety practices could result in death or serious injury.

READ AND FOLLOW THE OPERATING INSTRUCTIONS IN THIS MANUAL BEFORE OPERATING THE PITBULL® SAFETY-LOC®. If you do not understand the instructions, ask your supervisor to teach you how to use the vehicle restraint.

Be certain to follow the instructions in this manual.

InsTallaTIon and opeRaTIonDo not use this vehicle restraint until you have received proper training. Improper use could result in property damage, bodily injury and/or death. Read and follow the complete OPERaTING INSTRUcTIONS on pages 17 and 20 before use. If you do not understand the instructions, ask your supervisor to explain them to you or call your authorized SERcO® distributor.

DO NOT USE THE VEHIcLE RESTRaINT If IT aPPEaRS DaMaGED OR DOES NOT OPERaTE PROPERLy. Inform your supervisor immediately.

Do not operate the vehicle restraint until all bystanders are clear of all moving parts.

Do not install the vehicle restraint anchor bolts into aged or unsound concrete. Improper installation of the vehicle restraint could result in death or serious injury to dock workers or other users of the vehicle restraint.

Do not load or unload any vehicle unless you make certain the vehicle restraint has securely engaged the RIG (rear impact guard) of the vehicle and set the brakes. If the vehicle restraint does not engage the RIG for any reason, BE cERTaIN TO cHOcK THE VEHIcLE WHEELS BEfORE LOaDING OR UNLOaDING.

Before chocking vehicle wheels or engaging vehicle restraint, dump air from air ride suspensions and set parking brake.

MaInTenance and seRVIceIf the vehicle restraint does not operate properly using the procedures in this manual, BE cERTaIN TO cHOcK THE VEHIcLE WHEELS aND ENSURE THE BRaKES aRE SET BEfORE LOaDING OR UNLOaDING. call your local SERcO® distributor for service.

Place barricades around the pit on the dock floor and driveway while installing, maintaining or repairing vehicle restraint restraining device.

Do not stand in the driveway between the dock and a backing vehicle.

Do not use the vehicle restraint as a step.

Keep hands and feet clear of moving parts at all times.

If equipped with heater there is a possible burn hazard if turned on.

all electrical troubleshooting and repair must be done by a qualified technician and meet all applicable codes.

Before doing any electrical work, make certain the power is disconnected properly tagged or locked off.

If it is necessary to make troubleshooting checks inside the control box with the power on, USE EXTREME caUTION. Do not place fingers or uninsulated tools inside the control box. Touching wires or other parts inside the control box could result in electrical shock, death or serious injury.

If you have any problems or questions, contact your local SERcO® distributor for assistance.


InsTallaTIon

MoUnTIng consIdeRaTIons

Before installation read and follow the Safety Practices on page 3. Failure to follow these safety practices could result in death or serious injury. READ AND FOLLOW THE OPERATION INSTRUCTIONS IN THIS MANUAL BEFORE OPERATING THE vEHICLE RESTRAINT. If you do not understand the instructions, ask your supervisor to teach you how to use the vehicle restraint.

Improper installation of the vehicle restraint could result in death or serious injury to dock workers or other users of the vehicle restraint.

Place barricades around pit on dock floor and drive while installing, maintaining or repairing vehicle restraining device.

Be certain bystanders in the driveway stand clear when the vehicle restraint is operated.

Be certain to follow the installation instructions in this manual.

Do not install the vehicle restraint anchor bolts into aged or unsound concrete.

1. The surface on which the vehicle restraint will be mounted must be flat to prevent binding of the mechanism. If the mounting surface is not flat it may be necessary to use shims or physically modify the dock face or driveway to provide a flat mounting surface.

PitBull® Safety-Loc® restraints require a 4" bumper projection from the front of the bumper to the rear of the back plate of the restraint (the mounting surface). Less than 4" of projection can allow vehicle RIG bar to damage the restraint.

2. The standard anchors included with this product may only be used on docks constructed of solid concrete. Docks constructed with other materials require special mounting consideration. contact your local SERcO® distributor for information.

Tools ReqUIRed• Welder• Impact or rotary hammer drill with 3/4" diameter concrete

drill bit, (also 7/8" diameter if driveway mount option is to be installed)

• 1-1/8" inch wrench• General hand tools • Touch up paint (cold spray galvanizing)• Torque wrench (175 ft-lb min.)• 1-1/8" deep socket• Rebar cutting drill bit (3/4" or 7/8") with rotary-only drill

motor• Threaded rod installation tool for rotary hammer drill with

3/4" coupler (driveway mount only).

fig. 1

Use the back Plate as a guide todrill holes for wedge anchors.(3/4" Dia. x 5-1/2" min. length anchor bolt)7 required for wall mount.

Optional Embed Mounting Plate Part No. 8-9071 (24" tall mounting plate) or Part No. 8-9072 (20" tall mounting plate)

CONCRETE DOCK FACE (standard installation)


InsTallaTIon, continued

Inadequate lifting equipment or practices can cause a load to fall unexpectedly. Make sure the lifting chain or other lifting devices are in good condition and have a rated capacity of at least 500 lbs. Never allow anyone to stand on or near the restraint when it lifted or positioned. Stand clear of the vehicle restraint when it is positioned. Failure to follow this warning can allow the restraint to fall, tip, or swing into people, which could result in death or serious injury.

Pit Floor

Pit Floor

Embed Mounting Plate

ANCHOR TO DOCKFACE

WELD TO EMBED MOUNTING PLATE (Optional, Applies To 2" Stand-Off Bracket Weld On)

5-1/2" min.

4 Anchors 3 Anchors Typical For Wall Mount

Full Weld AcrossThe Top

9"

9"Do Not WeldInside Bolt Holes

4" min.

Torque Anchor Bolts To 175 ft. lbs.

2, 1/4" Fillet Welds 4" Long On 8" Centers On Both Sides

fig. 2

fig. 3



Do not install, operate, or service this product unless you have read and followed the Safety Practices, Warnings, and Installation and Operating Instructions contained in this manual. Failure to do so could result in death or serious injury. ALWAYS USE DOCK LEvELER SUPPORT WHEN WORKING UNDER A DOCK LEvELER RAMP OR LIP.

Place barricades around pit on dock floor and drive while installing, maintaining or repairing dock leveler or vehicle restraint.

Improper installation of anchoring devices or installation into aged or unsound concrete could result in death or serious injury.

Inadequate lifting equipment or practices can cause a load to fall unexpectedly. Make sure the lifting chain or other lifting devices are in good condition and have a rated capacity of at least 500 lbs for the lifting angle used. Never allow anyone to stand on or near the restraint when it is lifted or positioned. Stand clear of the vehicle restraint when it is positioned. Failure to follow this warning can allow the restraint to fall, tip, or swing into people, which could result in death or serious injury.

Improper installation that allows the pendant dock leveler lip to support the weight of the dock leveler on the vehicle restraint could result in death or serious injury.

wall MoUnT (standard Installation)1. Place the vehicle restraint on the driveway. See fig. 1.

center it on the dock position. Operate the dock leveler with the vehicle restraint in its intended position to assure there is no interference. Make sure the lip, when in the storage position, does not interfere. Use the back plate as a guide to drill the 7 holes for the 3/4" diameter wedge anchors. Place the anchors in the holes as they are drilled to prevent the vehicle restraint from shifting during drilling. Ensure back plate lies flat with dock face - shim if necessary. Torque the anchors to 175 ft. lbs.

2. If steel embed plate is used, see instructions in fig. 1, 2 and 3.

Ensure area is well ventilated when welding galvanized metal, fumes may be toxic.

3. for low dock installations reference fig. 4-6. If the top anchor positions are less than 4" from the pit floor do not install them. Install pit floor mounting plate (Requires four 3/4" anchors, supplied by others) and weld to the back of the restraint as shown in fig. 5 and 6.

InsTallaTIon wITh edge-of-docK Type leVeleRs4. Stand-off or edge-of-dock levelers require a special

stand-off to be used between the vehicle restraint and the dock face to maintain the 4" bumper projection from the front of the bumper to the rear of the back plate of the restraint (the mounting surface). See fig. 7 and 8.

dRIVeway MoUnT (optional Installation)1. If the dock face is not suitable for anchoring, a driveway

mount option is available. a special concrete pad must be poured if sound concrete is not available on the driveway. See fig. 9 and 10. Place the vehicle restraint on the driveway, center it on the dock position. Operate the dock leveler with the vehicle restraint in its intended position to assure there is no interference. Make sure the lip when in the storage position does not interfere.

2. Use the restraint rear base plate as a guide to drill the four 7/8" diameter x 6-5/8" deep holes for the four chemical anchors supplied by SERcO®. Use the front base plate as a guide for drilling the 3/4" diameter holes for the two 3/4" x 5-1/2" wedge anchors supplied by SERcO®. See fig. 9, 10 and 11. Place the front anchors in the holes as they are drilled to prevent the vehicle restraint from shifting during drilling. Torque the wedge anchors to 175 ft. lbs.

3. Install the chemical anchors per installation instructions on page 10.



LOW DOCK HEIGHT

Weld To Curb Angle With A Continuous 1/4" Weld

Anchor Pit Floor Mounting Plate To Floor

Anchor Pit Floor Mounting Plate To Floor

Install Wedge Anchors(3/4" Dia. x 5-1/2" min.)

*Dock Leveler Not Shown

*Dock Leveler Not Shown

(Weld Pit Floor Mounting Plate To Lock Unit Back Plate With A Continuous 1/4" Fillet Weld.)

Install Wedge Anchors(3/4" Dia. x 5-1/2" min.)

fig. 4

fig. 5

fig. 6

noTe:If top anchor positions in the mounting plate are less than 4" from the pit floor do not install as concrete may fracture. Install Pit floor Mounting Plate (requires 4 anchors) and weld to the back of the mounting plate or to the curb angle as shown. (pit floor mounting plate part no. 586-2935)



CANTILEVERED OR EDGE-OF-DOCK LEVELER

4"

Bolt To Stand-off Bracket (Supplied)

Anchor to Dock Face (3/4" Dia. x 5-1/2" min.)Or Weld To Embedded Mounting PlateTorque To 175 ft. lbs.

NOTE: If welding stand-off bracket to embedded mounting plate refer to Fig. 3 for welding.

Must Be Mounted In The Same Plane As A Nominal 4" Projection Bumper

The Vehicle Restraint Must Be Mounted In The SamePlane As A Nominal 4" Projection Bumper

4"

5-1/2" Min.*

* 2" cantilever bracketrequires 2" longer thanstandard anchorsfurnished by others

Nominal 1" Clear Under Restraint.Do Not Anchor Bolt Or ShimTo Driveway

2" Bracket Can Ship Loose Or Welded To Restraint From Factory. If Welding Bracket To Restraint, Embed Plate Or Both, Use Weld Pattern Seen On Page Fig. 3

fig. 7

fig. 8



Concrete pad size shown is a general recommendation in size so that the vehicle weight is on pad. Due to different soil, drainage and drive conditions a civil engineer must be consulted to detail the correct pad size for the particular application. Failure to do so may cause the pad to fail to hold the restraint in place and could result in death or serious injury.

DRIVEWAY MOUNT (Recommended when dock face is not suitable for lock mounting)

10"

120"Do Not Anchor Bolt To Wall

96"

Lock unit must be anchored to firm 10" thick concrete. If a concrete pad is required, pour 10" deep x 96" wide x 120" long with rebar construction.

Install Four (4) 3/4" Dia. Chemical Anchors Into 7/8" Dia. x 6-5/8" Deep Hole At Rear Of Restraint(Supplied By SERCO®)

Install Two (2) 3/4" Dia. x 5-1/2" Min. Wedge Anchors At Front Of Lock Unit.(Supplied By SERCO®)

fig. 9

fig. 10



cheMIcal anchoR InsTallaTIon (ground Mounting only)

Do not install the vehicle restraint anchor bolts into aged or unsound concrete.

Drill hole to the size and depth as shown in previous figures for the specific anchor required. Clean hole with compressed air or wire brush and blow-out bulb.

Insert the capsule into the hole.

Thread the hex nut onto the stud leaving 3-4 threads exposed above the nut. Then thread the coupler onto the nut/stud assembly until tight.

Insert the drive unit into the rotary percussion hammer drill. Engage the drive unit into the coupler/stud assembly. at a drill speed of 250-500 rpm, break the glass capsule with the chamfered end of the stud and drive the stud into the bottom of the of the hole. Turn off the drill motor immediately and disengage.

To remove the coupler, hold the hex nut with a wrench, and with a second wrench, turn the couple counter-clockwise to release the friction lock. Then unthread the coupler from the assembly.

Allow Chem-Stud to cure for specified time (see table below) before loading stud.

RecoMMended cURIng TIMe concrete Temperature Minimum cure Time 68°f and over 10 minutes 50°f to 68°f 20 minutes 32°f to 50°f 1 hour 23°f to 32°f 5 hours Below 23°f Not Recommended

sToRage RecoMMendaTIonschem-Stud anchors have a shelf life of 2-4 years providing they are stored in their original containers in a cool (under 70°f) dry area and are not exposed to direct sunlight. To determine the usability of the product after a long storage period, invert the capsule several times and if the resin is in liquid state and flows, the capsule may be used.

fig. 11



Before doing any electrical work, make certain the power is disconnected and properly locked or tagged off. Failure to do so may result in death or serious injury. All electrical work must be done by a qualified technician and must meet all applicable codes.

Do not route control wiring for any other device through this control box unless properly shielded.

Be certain power is off when wiring to the control box or signal lights. Failure to do so could result in electrical shock, death or serious injury.

elecTRIcal InsTallaTIon noTe:Reference wiring diagrams on pages 39 and 40 for all field connections.

1. Mount control box inside the building 5 feet above the floor, to the left of the doorway. See Fig. 12.

2. standard 24V exterior compact lights.Mount and wire outside 24V signal light assembly into the control box to terminals 7 for Red, 8 for Green and 9 for common. Terminals are located on the Pitbull Output Board.

The optional 110V outside lights Kitfor 110V outside lights Kit 6003336 installation in control panel. See schematic on page 40.2.1 Switch the outside lights “flash / No flash” switch

to the “No flash” Position. Located on the Pitbull Output Board. See fig. 36, item 17.

2.2 connect relay to din rail as shown in fig. 34 and 35, item 28.

2.3 connect the Red Supply wire marked “OL1” to control panel power supply terminal “OL1”.

2.4 connect White Supply wire marked “OL2” to control panel power supply terminal “OL2”.

2.5 connect the yellow control wire to Output Board Terminal “8”.

2.6 connect the Purple control wire to Output Board Terminal “9”.

2.7 connect the 110V High Visibility Red light to the kits terminal “R10”.

2.8 connect the 110V High Visibility Green light to the kits terminal “R11”.

2.9 connect the 110V High Visibility common wire to the kits terminal “R12”.

Connecting 24v lights to R10, R11 and R12 will destroy the light assembly.

3. Run 3/4" conduit from the vehicle restraint to the control panel. Junction box optional (supplied by others).

4. Run the seven, color coded, factory connected wires from the terminal strip on the restraint to the control panel. Do not leave excessive slack in the wires or they will be damaged by moving parts. See fig. 12.

5. activation of the auto-engage feature for sl80 and sl90 Restraints:

To enable the Auto-Engage feature flip the Input Board dip switch position “5” to the on position. Input 12 on the PLc will illuminate. See fig. 36, item 5.

noTe:for the auto Engage feature, you must have a vehicle presence sensor installed. See page 12 for wiring, page 35 for mounting and page 19 for operations.

6. Program the Security Keypad (standard on SL90, optional on SL60, SL70 and SL80) per instructions on page 20.

7. The leveler interlock (optional for all) for installation of leveler interlock/termination to control panel:7.1 Identify interlock wiring from leveler (1 pair of

wires).

7.2 Terminate these 2 wires from the leveler to terminals 13 and 14 on the Pitbull Output Board terminals in the control panel.

noTe:Termination is not polarity sensitive allowing installation to either terminal with either wire. This interlock circuit is fused at 2 amps.



8. The optional heater Kitfor Heater Kit 6003334 installation in control panel.8.1 With Power to the panel switched off plug the

Heater control Board into the Output boards Heater Output Socket located on the right side.

8.2 field wires for the heater element are landed on terminals H1 and H2 on the Heater control Board. (Terminal blocks labeled H1, H2)

9. The optional audible alarm Kit (optional on sl60-sl80; standard on sl90)for audible alarm Kit 6003335 installation in control panel.9.1 Remove knockout from bottom of panel. (knockout

is approximately 1-1/8" in diameter).

9.2 Remove threaded collar from alarm horn face.

9.3 feed face of audible alarm through hole (knockout) from inside the panel.

9.4 Screw plastic collar over face of alarm horn. Tighten collar to secure horn.

9.5 Plug the 2 pin plug into the Output boards 2 post alarm Socket.

10. The Vehicle presence sensor (optional for sl90, standard on sl70, sl80)

for Vehicle presence sensor installation/termination to control panel see page 35.10.1 The sensor is a 4 wire device. first terminate the

Positive lead (brown wire) to any “Rc” terminal on the Input Board.

10.2 Terminate the Negative lead (blue wire) to any “0V” terminal on the Input Board.

10.3 Terminate the load lead (black wire) to “3” terminal on the Input Board.

10.4 Tape (insulate) the unused white wire.

11. The leveler stored sensorfor leveler stored sensor installation/termination to control panel.11.1 To enable the leveler stored sensor feature flip

the input board dip switch position “3” to the Off position. Input 10 LED on the PLc will go out.

11.2 The sensor 625-203 is a 4 wire device. first terminate the Positive lead (brown wire) to any “Rc” terminal on the input board.

11.3 Terminate the Negative lead (blue wire) to any “OV” terminal on the input board.

11.4 Terminate the Load or Switched lead (black wire) to the “19” terminal on the input board.

11.5 Tape (insulate) the unused white wire.

12. Permanently mount the vehicle driver’s instruction signs on the outside wall above and below the signal light when installing Red/Green Light assembly. See fig. 12.

13. Wire power to the control box through a fused disconnect (supplied by others) using terminals provided in the control box. See fig. 12 and Wiring Diagram on page 39 and 40. Turn the power on.

14. Operate the vehicle restraint following the operating instructions on pages 17-18. check for proper light operation, alarm operation (if equipped) and smooth operation according to the operating instructions.

15. Instruct the dock workers how to use the vehicle restraint using the operating procedures on pages 17-18.



Before doing any electrical work, make certain the power is disconnected and properly locked or tagged off. Failure to do so may result in death or serious injury. All electrical work must be done by a qualified technician and must meet all applicable codes.

Be certain power is off when wiring to the control box or signal lights. Failure to do so could result in electrical shock, death or serious injury.

4

21

T1T2

RC

Mount sign below light unit. Keep light and sign in one area to concentrate visual warning display.

Center line of light in line with vehicle mirror –

approx. 90"

Minimum 4" Bumper Projection

23-1/2"

15-1/2"14"

(Min.)

10" Max.

Ground Mount SL

“B” Ø3/4 I.D. Conduit

“C”

Optional LS5Leveler Stored

Allow For Door Seals(Approx. 15")

16"

18-1/2"14"

(Min.)

10" Max.

Ø3/4 I.D. Conduit“C”

“C” Lock Unit Connections

Note: 120V Power SupplyMust Be 4 Amp Minimum

“D” Conduit ThroughWall To Exterior Light

“B” Conduit ThroughWall To Lock Unit

Optional LS3 Vehicle PresentLS6 Door Open

LS7 Door Closed Sensors

Control Panel Mounting“A” 120V Supply

DoorFrame

Optional LS5Leveler StoredSensors

Eye Level(Approx. 60")

Inside Wall

LS1 LS2 LS4

Blue Brown/White

Blue Blue

Blue BlackBlue Brown

BrownBrownOrange Orange

Green

Red

Lock Unit Wiring

Optional LS3 Vehicle PresentSensor

Refer to the electrical schematics on pages 39 and 40 for electrical

connections.

fig. 12



fInal InsTallaTIon

leVeleR sToRed sensoR - ls5 (optional)The leveler stored sensor offers an optional interconnection between the dock leveler and the vehicle restraint. When installed the vehicle restraint cannot be lowered or released from lights only until the dock leveler has been stored.

Typical pit leveler installation for SERcO® hydraulic levelers (except PaL). for all others, call your authorized distributor.

assembly number 99851• a leveler stored sensor can be mounted beneath

SERcO® hydraulic dock levelers that have lip keepers as shown in fig. 13.

• Weld the leveler stored sensor bracket as shown. attach the face of the sensor so when the lip is stored the face of the sensor is 1" from the lip.

• Switch the input board dip switch position # 3 to the “Off” position and wire the leveler stored switch to the panel as shown in the schematic on page 39.

• The input 10 will now go on only when the leveler is in the stored position.

VehIcle pResence sensoR - ls3 - opTIcal sTyle(standard on models sl70, sl80, optional sl90)Mount the switch as shown in fig. 29 on page 35.

Ensure the LS3 sensors logic switch is set to L/O (Light Operate)

• The switch is located on the top of the sensor under a clear plastic cover.

Wire the switch into the panel as per the schematic on page 39.

• When a vehicle is present at the door, PLc input 3 will go on.

fig. 13

Frame

Cable (To Junction Box)1/8

3/4

1-1/4

1 Ref

Sensor625-203Shown

Leveler Stored SensorBracket - 586-2417


Main Arm

Upper Arm

Gas Spring

Front Strut

Actuator Proximity Sensors

Hook Strut

Sector Plate

Frame

Primary Hook

Primary Hook

coMponenTs and specIfIcaTIonsThe main components of the vehicle restraint are shown below. See the Parts List for specific part numbers.

fig. 14

Red Light

amber Light

Green Light

Restraint Override(Lights Only)

Engage

Release

fig. 15


coMponenTs and specIfIcaTIons, continued

control panel - NEMa 12, Solid state PLc (Programmable Logic controller), 120 vac, Primary supply fused at 4 amps, UL and UL-c listed panel and components.

proximity sensors - NEMa 6P, normally open, with LED pilot light.

linear actuator (Raise/lower) - 1000 lb load capacity, 24 vdc, 14 full load amps, holding brake.

elecTRIcal sysTeM opeRaTIonThe following describes the operation of the electrical system when the controls are activated:

engage press in

• actuator starts.• Hook raises to engage the RIG

bar.• actuator stops when proximity

sensor LS2 is reached.

ResTRaInT oVeRRIde (lights only)Turn clockwise (spring Return)

• Turn switch to right and release.• Power is cut off from motor

circuit.• Power is supplied to outside red

light and inside green and amber lights.

Releasepress in

• actuator starts.• Hook lowers to stored position.• actuator stops when proximity

sensor LS1 is reached.• Returns system from RESTRaINT

OVERRIDE (Lights Only) to normal operating condition.


Before operating the vehicle restraint, read and follow the Safety Practices, Warnings, and Operating Instructions in this manual. Use by untrained people could result in death or serious injury.

Do not load or unload any vehicle unless you make certain the vehicle restraint has securely engaged the vehicle’s RIG (rear impact guard) bar and set the brakes. If the vehicle restraint does not engage the RIG bar for any reason, BE CERTAIN TO CHOCK THE vEHICLE WHEELS AND SET THE BRAKES BEFORE LOADING OR UNLOADING.

Enter the vehicle only when the green signal light on the control box is on. You must check the green signal light every time the vehicle is entered, if the green light goes out at any time during loading or unloading operations, immediately check the vehicle restraint to ensure that it is securely hitched. vehicles leaving or moving when loading and unloading are in process could result in death or serious injury. Failure to place the hook in the stored position when not in use could result in damage to the vehicle restraint and incoming vehicles. Be certain bystanders in the driveway stand clear when the vehicle restraint is operated.

engagIng VehIcle1. When the vehicle restraint is stored, the outside green

light and inside red lights will be on. See fig. 16. noTe:If equipped with optional LS3, inside solid amber will turn on when vehicle backs in and will remain on until the vehicle leaves or restraint successfully engages the RIG bar.

2. To secure the vehicle at the dock, press the engage button. The outside lights immediately change from green to red. The restraining hook will begin to raise. See fig. 17.

noTe:If equipped with optional LS3 and auto Engage, the hook will raise automatically after 60 seconds.

3. The restraining hook will raise until it contacts the RIG of the vehicle. When the restraint has fully engaged the RIG bar, the inside lights will change from red to green. Visually check that the hooks have engaged the RIG bar to ensure that the vehicle is now safe to unload. See fig. 18.

opeRaTIng InsTRUcTIonsUse these instructions for normal operations.

Green

Red

RedRed

Press To Engage

RedGreen

fig. 16

fig. 17

fig. 18


opeRaTIng InsTRUcTIons, continued

ReleasIng VehIcle1. To release the vehicle from the dock, press the Release

button. The inside lights immediately change from green to red. The restraining hook will lower until it is stored. The outside lights will change from red to green. See fig. 19.

noTe:If optional LS5 leveler stored switch is installed the leveler must be stored before restraint will release.

If optional LS3 is installed inside lights will display solid red and amber once restraint hook is lowered until the vehicle leaves, when amber light will turn off.

Do not initiate RESTRAINT OvERRIDE (LIGHTS ONLY) unless vehicle wheels have been chocked. Only authorized trained personnel should initiate RESTRAINT OvERRIDE (LIGHTS ONLY).

no RIg (Rear Impact guard)1. If the hook raises without making contact with the RIG, it

will lower to the stored position. at this time the inside red and amber lights will flash indicating that the vehicle could not be secured. chock the wheels, and then turn the selector switch to the lIghTs only position. The outside lights change from green to red, the inside lights change to green and amber. The vehicle is now safe to load or unload. When loading is completed, remove the wheel chocks and press the Release button to return to the normal operation. The inside lights change to red and the outside lights change to green. See fig. 20.

hIgh RIg (Rear Impact guard)1. If during unloading, the vehicle raises and the restraint

hook looses contact with the RIG, the inside light will change from green to red and flashing amber to indicate a possible safety hazard. The restraint will remain in the raised position. chock the wheels and then turn the selector switch to lIghTs only. When loading is completed, remove the wheel chocks and press the Release button to return to the normal operation. See fig. 21.

Green

GreenAmber

AmberRed

Red

Red

Red

Press To Release

Switch To Lights Only

Switch To Lights Only

Wheels Chocked

Wheels Chocked

Vehicle Raises

fig. 19

fig. 20

fig. 21


aUxIllIaRy plc ModUles

aUxIllIaRy poweR down (standard for sl60, sl70, sl80 and sl90)The auxilliary power down connector, when wired to a 12V battery, allows the operator to power the vehicle restraint down using the battery through the control panel in the event of a power outage. This will allow the restraint to release the vehicle when power is not available.

acTIVe sysTeM coUnTeR (optional for sl70 and sl80, standard for sl90)The active system counters consist of two electronic counters that keep track of two cycle count values. The counters are mounted within the enclosure and are tagged “c1” and “c2”.

counter “c1” displays the total cycles the restraint has operated. a cycle equals one restraint raise +1 restraint lower.

counter “c2” displays the total successful engagements the restraint has made. a successful engagement is recorded only when the restraint has raised and the RIG was successfully hooked.

Reset counters by pressing the “RST” button located on the face of the counters

aUTo engage (standard for sl80, optional for sl90)When a vehicle backs in at the dock the LS3 will detect that it has arrived.

• Inside lights will change to solid amber.

• 60 seconds after the vehicle is present, the restraint will raise and engage the RIG.

• The outside lights will change to flashing Red.

• Inside lights will change to Solid Green.

If the restraint fails to engage the RIG or no RIG is present, the restraint will lower back into the housing and the inside lights will change to flashing Red and amber.

• Manually chock the wheels and switch to RESTRaINT OVERRIDE (LIGHTS ONLy).

noTe:a Trailer Presence Sensor is required for this option.


Keypad pRogRaMMIng InsTRUcTIonsStandard on SL90; Optional on SL60, SL70 and SL80.

secURITy Keypad, TwIdo plc conTRolThe security keypad prevents unauthorized operation of the vehicle restraint. a separate numeric password must be entered to release the restraint hook, or change to the “Lights Only” mode of operation. Due to the sensitive nature of the operation of this device, passwords will be issued only to authorized personnel as dictated by the end user.

Keypad opeRaTIonsThe security keypad is a 4 x 3 matrix standard telephone configuration with numeric keys labeled 0 to 9 and two special function keys, “ ” and “ ”. audible queues will be issued to aide in the keypad’s programming (note that the control panel must be equipped with an optional audible alarm to hear audible tones). The LIGHTS ONLy and RESTRaINT RELEaSE functions will be initiated by four digit passwords entered from the keypad. for normal operation such as LIGHTS ONLy and RESTRaINT RELEaSE, simply enter the programmed four digit password to activate the desired function. The default (factory programmed) passwords are:

• LIGHTS ONLy: 0001• RESTRaINT RELEaSE: 0002

No audible alerts are issued during normal operations. If the user pauses for more than a second between key entries the system will reset and require the user to reinitiate the entry sequence.

To re-program the passwords, enter the program mode. Press and hold the “ ” key for three seconds. There will be two short audible tones issued when the program mode is active. Next enter the existing password followed by the new password. Press the “ ” key to accept the changes. There will be three short audible tones issued when the new password has been successfully stored. The unit will then return to the normal operating mode. The program mode can be canceled by pressing the “ ” key anytime during the programming sequence prior to entering the complete string of digits. If the user pauses for more than ten seconds between key entries the system will exit the program mode without storing any new password values.

If the password is forgotten, a PLc cold boot procedure will restore the default passwords (consult the factory for details on how to perform a cold boot procedure).


opeRaTIon wITh KeypadStandard on SL90; Optional on SL60, SL70 and SL80.

ResTRaInT engage (without auto engage)Press the Restraint ENGaGE button.

• Outside Lights will change to RED. The lock will raise to engage the vehicle RIG.

• If contact is made Inside Lights will change to solid GREEN.

• If the restraint cannot engage the RIG the restraint will lower, the horn will sound (if equipped) and the inside RED and AMBER lights will flash.

ResTRaInT engage (with optional auto engage)Vehicle is present at the dock, inside lights change to solid aMBER.

• Outside Lights will change to RED. The lock will raise to engage the vehicle RIG after 60 seconds.

• If contact is made, inside lights will change to solid GREEN.

• If the restraint cannot engage the RIG the restraint will lower, the horn will sound (if equipped) and the inside RED and AMBER lights will flash.

Do not initiate RESTRAINT OvERRIDE (LIGHTS ONLY) unless vehicle wheels have been chocked. Only authorized trained personnel should initiate RESTRAINT OvERRIDE (LIGHTS ONLY).

ResTRaInT oVeRRIde (lights only)Make certain the vehicle wheels are chocked and the brakes are set.

• The operator can change the system to Restraint Override (Lights Only) by entering the programmed four-digit “Restraint Override (Lights Only)” code.

• The horn (if equipped) will stop sounding and the lights will change.

• The outside lights will display flashing RED and the inside lights will display solid GREEN and aMBER.

ResTRaInT Release oR ResTRaInT oVeRRIdeTo release restraint, enter the programmed four-digit “RELEaSE code”.

• The Outside lights will switch to display flashing GREEN and the inside lights will display solid RED (if equipped with optional LS3, inside lights will display solid RED and aMBER until vehicle leaves when lights will change to solid RED only).


pReVenTIVe MaInTenance

Before servicing the vehicle restraint, read and follow the Safety Practices on page 3 and the Operation section in this manual. Failure to do so could result in death or serious injury.

To ensure the continued proper operation of your vehicle restraint, perform the following preventive maintenance procedures.

daIly

1. check all lights on the control panel and outside to ensure they are functioning.

weeKly

1. Remove all debris from the vehicle restraint to ensure operation is unobstructed.

2. Inspect operation of the RIG sensor bar to ensure it pivots freely.

3. Inspect the vehicle restraint for damage that may weaken the anchoring strength. Re-tighten the concrete anchors if necessary.

qUaRTeRly

1. Remove the side cover of the restraint and remove any debris.

2. Inspect the proximity sensors for proper adjustment.

3. Lubricate and clean as shown in fig. 22 on page 23.

4. Raise the restraint and inspect the mechanism for any signs of wear, distortion or cracked welds.

5. check all operating, warning, and caution labels and signs (refer to pages 41 and 46) and be sure they can be read. Replace as necessary.

6. Inspect operation of the RIG sensor bar to ensure it pivots freely.

7. Inspect the vehicle restraint for damage that may weaken the anchoring strength. Re-tighten the concrete anchors if necessary.

8. Inspect all mechanical pivot points on the restraint. If necessary clean and remove foreign material with brush and penetrating oil.


pReVenTIVe MaInTenance, continued

lUbRIcaTIon

fig. 22

1

4

2

4

1

4

3

2

4

4

4

4

1. Lubricate main arm pin and front strut pin with bearing grease. apply at grease zerk.

2. Lubricate actuator pivot pins with SaE 30W oil.

3. Lubricate gas spring ball studs with spray type lithium grease (both ends).

4. clean and remove foreign material from all pivot points using a brush and penetrating oil.


TRoUbleshooTIng gUIde

Before servicing the vehicle restraint, read and follow the Safety Practices on page 3 and the Operation section in this manual. Failure to do so could result in death or serious injury.

The functions of the vehicle restraint are controlled by a Programmable Logic controller (PLc) which has LED indicator lights to display errors and the state of input and output signals. The PLc also has fuses to protect various electrical circuits. for PLc LED diagnostics please refer to pages 28-31 in this manual.

Use the Troubleshooting Guide if the vehicle restraint fails to perform properly. find the condition that most closely matches your situation, and make the recommended adjustments.

ResTRaInT does noT RaIse oR loweRpRobleM possIble caUse solUTIon

1. Restraint does not operate. No Inside lights. No PLc LED indicator lights.

2. Primary fuse blows continually.

3. No lights on panel. Some PLc LED inputs on. Not Pitbull Output Board lights on.

4. No lights on panel. Some PLc LED inputs on. No PLc LED output lights on. Pitbull Output Board LED’s on.

a) No power to control panel.

b) Primary 4 amp fuse blown.

a) faulty transformer, faulty PLc or faulty Pitbull output board.

a) faulty transformer.

a) Program Error.

a) check for 120V supply at terminals L and N.

b) Replace fuse.

a) Disconnect the RED 24V wire from transformer secondary side and the RED/BLacK 120V supply wire from the PLc. cap the 120V wire and replace fuse. If fuse still blows replace the transformer. If fuse does not blow reconnect the transformer and PLc supply wiring and unplug the entire PLc/Boards assembly from the backplate, replace fuse. If fuse blows replace the PLc. If fuse does not blow replace the Pitbull Output Board.

a) check for 24 Vac across transformer secondary terminals. Replace if faulty.

a) cycle control panel power Off/ON to reload program. If program does not reload automatically, contact the factory.


TRoUbleshooTIng gUIde, continued

ResTRaInT does noT RaIse oR loweR, continued

pRobleM possIble caUse solUTIon5. Motor does not run. all panel

lights and diagnostic LED’s are correct.

6. Restraint stored. PLc input 1 and 4 on. Inside red light on and inside amber light flashing.

7. No lights on panel. Some PLc LED inputs on. Not Pitbull Output Board lights on.

a) faulty wiring to actuator or faulty actuator.

b) faulty Pitbull Output Board.

c) faulty PLc.

a) Hook stuck down.

a) Proximity sensors LS1 and LS2 both on at the same time. One proximity sensor failed on.

a) Plug Dc voltmeter leads into the top of the Pitbull Output Board terminals T1 and T2. When outputs 4 and 5 are on there should be 20-24VDc indicated on the meter. If yes then also check for 20-24VDc at then actuator. If yes then replace the faulty actuator. If no then check the wiring to the actuator for damage and replace as required.

b) If no voltage is found between Pitbull Output Board terminals T1 and T2. Then check for 20-24VDc between the PLc output terminal 4 and ground and 5 and ground when the outputs are on. (note: you will see ~10VDc between the PLc output terminals and ground when the outputs are off) If 20-24VDc is present when the outputs are on then replace the Pitbull Output Board.

c) If no 20-24VDc is not present when the outputs are on then replace the faulty PLc.

a) free hook. If it cannot be freed in the stored position, remove the wire from terminal 4, raise the restraint, and turn circuit breaker off before working on the sensor bar.

a) If restraint is stored, LS2 is faulty. If restraint is raised, LS1 is faulty. Replace or adjust proximity sensor.



pRobleM possIble caUse solUTIon1. Restraint stored. PLc LED

input 4 on. Inside red light on and inside amber light repeats 2 flashes.

2. Restraint restores after it reaches raised position. PLc LED input 1 on. Inside red light and inside amber light flashes.

3. Restraint raises, ratchets, then restores. Inside red light on and inside amber light repeats 3 flashes.

1. Restraint restores, ratchets, then stops. PLc LED input 1 off. Inside red light on and inside amber light repeats 4 flashes.

a) RIG sensor bar stuck down.

a) No RIG.

b) Sensor bar problem.

c) faulty proximity sensor LS4

a) No signal from proximity sensor LS2, causes actuator clutch to slip.

b) faulty proximity sensor LS2

a) Obstruction in mechanism prevents lowering.

b) No signal from proximity sensor LS1, causes actuator clutch to slip.

c) faulty proximity sensor LS1.

d) Damaged sector plate assembly.

a) free sensor bar. If it cannot be freed in the stored position, remove the wire from terminal 4, raise restraint Turn power off to panel before adjusting proximity sensor LS4.

a) check vehicle for presence of the RIG.

b) Open control panel and check if PLc LED input 4 indicator light is on when sensor bar is depressed. Replace or adjust proximity sensor LS4 if required.

c) check if LED on LS4 indicates. If no signal, check wiring from PLc to LS4. Replace or adjust proximity sensor LS4 as required.

a) Open control panel and check if PLc LED input 2 indicator light is on when LS2 is engaged. Replace or adjust LS2 as required.

b) check if LED on LS2 indicates. If no signal, check wiring from PLc to LS2. Replace or adjust proximity sensor LS2 as required.

a) check for obstruction preventing restraint from restoring.

b) Open control panel and check if PLc LED input 1 indicator light is on when LS1 is engaged. Replace or adjust LS1 as required.

c) check if LED on LS1 indicates. If no signal, check wiring from PLc to LS1. Replace or adjust proximity sensor LS1 as required.

d) Replace sector plate assembly.

ResTRaInT does noT RaIse pRopeRly

ResTRaInT does noT ResToRe pRopeRly



ResTRaInT does noT ResToRe pRopeRly, continued

pRobleM possIble caUse solUTIon2. Restraint stops above top of

housing. PLc LED input 1 on.

1. No panel face lights.

2. Outside light(s) do not come on.

3. Outside light(s) do not flash.

a) Proximity sensor LS1 indicates too soon.

b) Damaged sector plate assembly.

a) LED light(s) burned out.

b) Disconnected or damaged wires.

a) Light(s) burned out.

b) Disconnected or damaged wires.

c) LED polarity incorrectly wired.

a) “flash/Do Not flash” switch on Pitbull Output Board is set to “Do Not flash” position.

b) faulty Pitbull Output Board.

a) adjust proximity sensor LS1 to stop restraint below top of frame. If maximum adjustment does not correct, check if sector plate has been damaged. Replace as required.

b) Replace sector plate assembly.

a) check lights. Replace if necessary.

b) Look at the Pitbull Output Board "Inside Lights" status LED. If the LED is out a short circuit of the lights or wiring has occurred. check for faulty or damaged light wiring. Replace as required. cycling the control panel power Off/ON will automatically reset the fuse.

a) check lights. Replace if necessary.

b) Look at the Pitbull Output Board “Outside Lights”. If the LED is out a short circuit of the lights or wiring has occurred. check for faulty or damaged light wiring. Replace as required. cycling the control panel power Off/ON will automatically reset the fuse.

c) Reverse polarity.

a) change the switch to the “flash” position. See figure 34, item 17.

b) If changing the switch position does not cause the lights to start flashing replace the faulty Pitbull Output Board.

lIghT pRobleMs


plc dIagnosTIcs

Do not service this product unless you have read and followed the Safety Practices, Warnings, and Operating Instructions in this manual. Failure to follow these safety practices could result in death or serious injury.

Keep hands and feet away from the restraint when in Diagnostics Mode. Operation may return as soon as the fault is cleared. Failure to keep clear could result in death or serious injury.

The diagnostic mode is meant for installation and troubleshooting only.

conTRol panel – led dIsplayThe vehicle restraint is controlled by a solid state Programmable Logic controller (PLc) which reads input signals from the push-buttons and proximity sensors, and closes the appropriate output relays to the motor and to the warning lights.

InpUT sIgnals

0 - Restraint Override (Lights Only) 1 - Lowered proximity switch 2 - Raised proximity switch 3 - Vehicle present sensor (optional) 4 - RIG sensor bar 5 - Unused Input 6 - Engage push-button 7 - Release push-button 8 - Unused input 9 - Optional door closed switch10 - Leveler stored switch (optional)11 - VSLW error signal (optional for VSLW integration)12 - Signal Input – Enables restraint auto rise when DIP

switch position 5 is set on. (standard for SL80, optional for SL90) See page 11 for details.

13 - Unused Input

oUTpUT fUncTIons

0 - Red light - panel face 1 - amber light - panel face 2 - Green light - panel face 3 - Exterior light relay (red = off) 4 - Restraint raise and tot cycle counter 5 - Restraint lower contactor 6 - audible alarm (optional) 7 - Restraint heater (optional) 8 - Engaged cycle counter 9 - Leveler interlock

The face of the PLc has LED indicator lights which show the status of each input and output. The Diagnostic LED will also indicate when an error condition exists, and the nature of the error will be displayed by the Red, amber and Green lights on the panel face.

fig. 23


plc dIagnosTIcs, continued

The chart below shows all of the valid conditions for the standard unit in normal operation.

Solid LED display

flashing LED display

ResTRaInT sToRedcommunication lights: Outside Green, Inside Red

ResTRaInT RaIsIng (after contacting RIg)communication lights: Outside Red, Inside Red

ResTRaInT RaIsIng (before contacting RIg)communication lights: Outside Red, Inside Red

ResTRaInT fUlly RaIsed (RIg contacted)communication lights: Outside Red, Inside Green

ResTRaInT loweRIngcommunication lights: Outside Red, Inside Red



lIghTs only (restraint lowered)communication lights: Outside Red, Inside Green and amber

dIagnosTIcs Mode – plc led dIsplayThis is caused by an obvious system error that halts the proper function of the vehicle restraint. When this happens the red inside and outside lights will be on and the amber light on the control panel is programmed to display a coded description of the problem that has occurred. Match the PLc LED display with the chart to determine the error that has occurred and check the corresponding equipment for problems.

When the PLc is in Diagnostic Mode the restraint will raise or lower only while a button is pressed and will stop when the button is released. Use this to position the restraint, but turn the circuit breaker off before attempting to make adjustments.

RIg sensor bar (ls4) is on when the hook is in the fully lowered position.Amber - 2 flashes repeatedOutside Red, Inside Red

Raised proximity switch ls2 is not being indicated 6 seconds after the engage button was pushed.Amber - 3 flashes repeatedOutside Red, Inside Red



lowered proximity switch ls1 is not being indicated 6 seconds after the Release button was pushed.Amber - 4 flashes repeatedOutside Red, Inside Red

Raised ls2 and lowered ls1 proximity switches are on at the same time.Amber - 5 flashes repeatedOutside Red, Inside Red

Pitbull Input Board

Pitbull Output Board

Input PowerSupply Energized LED

Actuator SupplyFuse 15A

Fuse and LightDiagnostic LEDs

Field Terminal7 Position

AlarmSocket

HeaterSocket



Input PowerSupply Fuse 1/4 Amp

fig. 24


adjUsTMenTsUse these instructions to adjust the vehicle restraint.

Do not service this product unless you have read and followed the Safety Practices, Warnings, and Operating Instructions in this manual. Failure to follow these safety practices could result in death or serious injury.

Place barricades around the pit on dock floor and drive while installing, maintaining or repairing dock leveler or the vehicle restraint.

Keep hands and feet away from moving parts when making adjustments.

pRoxIMITy sensoR locaTIonsThree proximity sensors are used to sense the various positions of the vehicle restraint. The sensors are solid state proximity devices which close the electrical circuit when they sense the presence of a steel target. The locations of these sensors are shown below. LS1 and LS2 sensors are located within slotted holes for variable positioning. adjust the position of the proximity sensors using two 15/16" (24mm) open end wrenches to loosen the holding nuts. Then slide the proximity sensor towards the front or back of the slot and gently tighten the nuts to 11 ft. lb (15 Nm) to secure the sensor. The face of the proximity sensor must be between 1/16" - 1/8" (1.6 - 3mm) from the target plate without making contact.

Door Opening

LS3: Optical Style TrailerPresent Sensor

Building Wall

LS3

LS2

LS1

Sensor Bar LS4fig. 25


adjUsTMenTs, continued

ResTRaInT sToRed sensoR – ls1Proximity sensor LS1 controls the lowered position of the restraining hook by stopping the motor when the restraint is lowered. The correct stored position is when the hook top is 3/16 inch below frame housing. To adjust proximity sensor LS1:1. Raise the restraint and disconnect power.

2. Remove side cover.

3. Loosen nuts holding LS1.

4. Move proximity sensor backward in the slot to lower the stored position.

5. Move proximity sensor forward in the slot to raise the stored position.

LS1

1/8"

Forward

Backward

fig. 26

6. Tighten nuts.

7. Reconnect power to the restraint. Return the restraint to the stored position. If the stored position is not correct, repeat steps 1-7.

8. Reinstall side cover.

If the actuator clutch slips and makes a ratcheting sound when the restraint is lowered, the proximity sensor LS1 is not closing. Move the sensor forward slightly and check the operation again.

noTe:Proper torque specification for tightening LS1 is 11ft. lb.


Sensor Target

Backward

Forward


ResTRaInT RaIsed sensoR – ls2Proximity sensor LS2 shuts off power to the linear actuator when the sector plate is fully raised and resting against the 1/2" stop bolt that acts as a physical limit for sector plate travel (see fig. 26). To check the proper setting, press the engage button. as the restraint raises press and hold down the sensor bar turning on LS4 (RIG sensor). LS2 is properly adjusted if the linear actuator shuts off without ratcheting and the restraint reaches its fully raised height with sector plate resting on the 1/2" stop bolt.

noTe:Proper torque specification for tightening LS2 is 11ft. lb.

To adjUsT The pRoxIMITy sensoR ls2:1. Remove side cover of restraint.

2. Disable proximity sensor LS2 by disconnecting wire from terminal R2 on terminal strip (see page 9).

3. Raise restraint until the linear actuator ratchets with the sector plate resting against the 1/2" stop bolt, then turn off power to the restraint.

4. Loosen sensor retaining nuts holding LS2.

5. Move proximity sensor until it is centered on the sector plate sensor target and the face of the sensor is 1/8" away from the target (see fig. 27 and 28).

6. Tighten retaining nuts.

7. Reconnect wire to terminal R2.

8. Turn on power to restraint and lower unit by pressing the release button.

9. Raise the restraint and verify the setting. Repeat steps 2 through 9 if required.

10. Reinstall side cover.

Sector Plate Stop Bolt

Sensor Target

fig. 27

fig. 28



TRaIleR pResenT sensoR – ls3LS3 senses a vehicle at the dock and transmits a signal to the control panel. This turns on the panel face aMBER light. Standard on SL70 and SL80. Optional on SL90. auto engagement of the vehicle restraint will occur after a 60 second delay. Standard on SL80 optional on SL90.

fig. 29Building Wall

Top View

Building Wall

Front View Side View

ConduitTo ControlPanel

14' - 6' MinimumAbove Grade

Center Line Of Door Opening

Note: Rotate Head 5 Degrees From Center

8-9952

1/2"RigidConduit

34" - 48" Ref.

315-370

opeRaTIonsno Trailer present

• Inside lights display Solid Red outside display Green.

Trailer arrives• Inside lights switch to Solid amber and Red, outside lights

continue to display Green.

operator engages vehicle restraint • Inside lights switch to Solid Green, outside lights switch

to display Red.

oR (with sl80 standard or sl90 optional auto engage)after a 60 second delay the Restraint will automatically attempt to engage the vehicles RIG.

• Inside lights switch to Solid Green, outside lights switch to display Red.

operator releases vehicle restraint• Inside lights switch to Solid amber and Red, outside lights

continue to display Green.

Trailer departs• Inside lights display Solid Red outside display Green.

noTe:If auto engagement is enabled (SL80 standard or SL90 optional) the vehicle restraint will not attempt to re-engage until the previously engaged vehicle is removed from the dock and a new vehicle arrives.


Spring

1/16" When SensorBar Is Depressed

Sensor Bar

Press Down

Red LED

LS4 Sensor


RIg sensoR baR – ls4Proximity sensor LS4 senses when the restraining hook has contacted an RIG. LS4 is properly adjusted if the flashing amber light turns off when the restraint is raised and the sensor bar is depressed.

Raise the restraint and press down on the sensor bar before the motor stops. The restraint will remain raised. Releasing the sensor bar will cause the amber light to flash.

The proper setting of LS4 is 1/16" between sensor target and proximity sensor while the sensor bar is depressed. noTe:Proper torque specification for tightening LS4 is 11ft. lb.

To adjust LS4, order the special tool from your local SERcO® distributor. P/N: ap2632 - VEHIcLE RESTRaINT LS4 15/16" WRENcH SET or make your own tool using the following instructions:1. Buy a 15/16" combination wrench (one end open-end,

other end 12-point box)

2. Using an abrasive cutoff wheel or “chop saw”, cut the wrench in half, in the middle of the handle.

3. carefully remove a 0.708" - 0.750" section from the box “ring”, directly opposite the handle. This is important, as the wrench must pass over the 18mm body of the proximity sensor.

4. Sand any sharp edges or burrs.

15/1

6

15/16 .708"-.750"

fig. 30


gas spRIng ReplaceMenT

To Replace gas spRIngs on The pITbUll® safeTy-loc® seRIes ResTRaInTTwo gas springs are used on the PitBull® SafETy-LOc® series restraints to bias the moving parts upward. Gas springs contain high pressure compressed nitrogen, and must be handled with care. The gas springs are charged with approx. 200 lbs. of force, and must BOTH be changed if either gas spring weakens or is damaged. To successfully replace gas springs, you must follow the instructions below.1. Remove the side cover from the restraint with the restraint

in the lowered position.

2. Remove the Sector Plate Stop Bolt.

3. Disable the LS2 sensor by removing its blue wire from the terminal strip.

4. Push the ‘Engage’ button to raise the restraint. When the hook reaches the top of the stroke and begins to make a ‘ratcheting’ sound you must turn off the power.

5. Disconnect the orange wire from the motor side of the terminal strip on the restraint. Insulate the bare end of this wire with a ‘wire-nut’ or electrical tape. This will make it impossible to lower the restraint electrically while you are working on it.

6. Cut a piece of 2x4 lumber to length and fit it tightly between the frame and the underside of the Main arm (see fig. 30). The length of this 2x4 must allow the gas springs to reach their free length.

The moving parts of the restraint are very heavy, and are supported by the gas springs. Great care must be taken to support the weight of these parts while removing or replacing the gas springs.

7. Remove the klipring from one end of the pin that joins the front Strut assembly to the Upper arm assembly. carefully slide out the pin while replacing it with a 1/4" diameter shaft screwdriver. This will allow the gas springs to extend to their free length so that they can be removed.

noTe:you may have to use the supporting wood to force the Main arm assembly upwards even further than before you removed the pin.

8. Rotate the retainer clips at each end of the gas spring and slide them out. Be careful with these retainer clips as they keep the socket ends fastened to the ball studs and are easily lost. Replace the gas springs one at a time beginning with the most obviously damaged gas spring. This may help to counterbalance some of the weight while you are working on the unit. Place a small dab of grease in each ball socket before you push the socket onto the ball stud. Make sure the rod end of the gas spring points downward.


gas spRIng ReplaceMenT, continued

noTe:Make sure the ball sockets are properly aligned – hold the gas spring in your hand and using pliers tighten the barrel end socket snug. Next hold the barrel in your hand as you use pliers on the rod end ball socket. Rotate the rod clockwise as you index the rod to proper orientation.

Do NOT use pliers on the chrome rod surface!

9. With both gas springs installed and the retainer clips in place, you can remove the 2x4 support, replace the front Strut Pin and kliprings.

10. Replace the orange motor wire, and the blue LS2 wire into the appropriate terminal strip connections. Install the Sector Plate stop bolt. Turn the power on and push the ‘Release’ button to restore the restraint.

11. Test the unit and reinstall the side cover.

Upper Arm

Front Strut PinMain Arm

Gas Spring

Sector PlateStop Bolt

TerminalStrip

Front Strut Assy.

2" x 4"

fig. 31


elecTRIcal scheMaTIc6003333 (Push-button Release, Switch Override)

fig. 32a

(Standard 24V High Visibility Exterior Lights Shown)

(For optional 110V exterior lights, see Fig. 32B)


elecTRIcal scheMaTIc6003301 (Keypad Release and Override)fig. 32B

(Optional 110V High Visibility Exterior Lights Shown)

(For standard 24V exterior lights, see Fig. 32A)


paRTs lIsT — VehIcle ResTRaInT

To ensure proper function, durability and safety of the product, only replacement parts that do not interfere with the safe, normal operation of the product must be used. Incorporation of replacement parts or modifications that weaken the structural integrity of the product, or in a way alter the product from its normal working condition at the time of purchase from SERCO® could result in product malfunction, breakdown, premature wear, death or serious injury.

1

4

7

5

6

8

9

10

3

12

13

16

11

19

21

17

29

25

26

18

28

27

30

22

24

23

31

39

35

37

40

34

33

54

47

25

25

2627

4646

53

56

42

52

313241

45 49

4832

36

50

4451

41

41

14

15

40

4338

20

2

5758

23

42

42

45

55

fig. 33


paRTs lIsT — VehIcle ResTRaInT, continued

Item quantity part description part number 1 1 frame assembly, Includes Items 38 and 45 9-0001

2 1 Main arm assembly, Includes Items 23, 24, 38 and 40 9-0003

3 1 Upper arm assembly, Includes Items 25 and 26 6001535

4 1 front Strut assembly, Includes Items 25 and 40 9-0007

5 1 Sector Plate assembly, Includes Item 23 9-0009

6 1 Primary Hook assembly 9-0011

7 1 Sensor Target assembly 9-0012

8 1 Sensor Bar assembly 9-0028

9 1 Secondary Hook assembly, Includes Item 26 9-0015

10 1 Hook Strut assembly 9-0030

11 1 Hook Strut 485-0240

12 1 Housing cover 9-0029

13 1 Pin - 1-1/4 OD 485-0056

14 1 Pin, Upper arm-Main arm, 1-1/4" OD, SL10-90 6001534

15 1 Pin-Main arm, 3/4 OD 485-0035

16 1 Pin-frame, 1" OD 485-0038

17 1 Pin-front Strut, 1" OD 485-0037

18 1 SL-Pin-Primary Hook, 1" Dia. 485-0108

19 1 SL Primary Hook Pin, 1" Dia. 485-0119

20 2 Gas Spring 338-018

21 1 Spring (LS4) 333-047

22 1 Spring (constant force) 338-009

23 4 Bushing - 1-1/4" 821-032

24 2 Bushing - 1-1/4" 821-035

25 4 Bushing - 1" 821-034

26 4 Bushing - 1" (flange) 821-033

27 2 Spacer - Main arm 485-0026

28 1 Nylon Roller 485-0235

29 1 clevis Pin - 1/2" Dia. x 2-3/4" lg. 231-502

30 1 clevis Pin - 1/2" Dia. x 1-25/32" lg. 231-505

31 2 Hitch Pin clip 231-503

32 2 LS1, LS2 Proximity Switch (c/w hardware) 625-036

33 1 LS4 Proximity Switch (c/w hardware) 18mm - Low Temp 625-043


paRTs lIsT — VehIcle ResTRaInT, continued

Item quantity part description part number 34 1 Tension Pin - 1/2" Dia. x 3-1/4" lg. 231-205

35 1 Tension Pin - 1/4" Dia. x 3/4" lg. 231-128

36 1 SL60 Wiring Harness Kit 9-9855

37 1 cable clip 441-125

38 4 Ball Stud 821-037

39 4 Retainer clip. (for gas spring) 236-124

40 2 Grease fitting (c/w ball check) 417-113

41 4 cresring - 1-1/4" 236-123

42 4 Klipring - 1" 236-114

43 2 Klipring - 3/4" 236-110

44 1 HHMS 10-32 x 3/4" lg. 211-820

45 1 HHMB 1/2-13 x 1-1/2" lg. 212-204

46 2 HH-STS 5/16-18 x 1/2" lg. 216-460

47 1 TEKS-4 Screw 12-24 X 7/8 6000285

48 1 Terminal Block - 9 Pole 541006

49 2 RHMS 8-32UNf x 7/8" lg. 6000582

50 2 Lock Nut 8-32 UNf Nylock 241-107

51 1 LN 10-32 Nylock 214-123

52 1 Linear actuator 341-008

53 2 Decal - “KEEP cLEaR” 824-001

54 1.5ft Hazard Stripe 921-056

55 1 Product Identifier Label SL 921-185

56 1 PitBull® Logo 921-247

57 1 Trailer Present Sensor Kit (Optional - not shown) 9-9221

58 1 Punch Tag - SERcO® Vehicle Restraints 921-249

59* 7/2 anchor Bolt, 3/4 UNc x 5-1/2 (not shown) 6001187

60† 4 Epoxy anchor Rod - 3/4 RaWL (not shown) 235406

61† 4 Epoxy capsule - 3/4, RaWL #65 (not shown) 235407

* Wall mount kit (7 reqd.), ground mount kit (2 reqd.).

† Ground mount kit.


paRTs lIsT — conTRol panelPush-button Release, Switch Override

1

4

531

69

710

3

121415

811

20

2

21

25 26

28

30

2224

1316 14

121415

fig. 34


paRTs lIsT — conTRol panel, continuedPush-button Release, Switch Override

Item quantity part description part number 1 1 Transformer 350Va 120 - 24Volt 6000443

2 1 Gould cc class fuse holder 6003299

3 1 cc class fuse 4 amps fNQ-R-4

4 1 TWIDO PLc 6001056

5 1 connector, cinch (aux. Powerup for Restraint) 632266

6 1 Light, Truck, Red 6000529

7 1 Light, Truck, yellow 6000530

8 1 Light, Truck, Green 6000531

9* 2 LED, Red 637-130

10* 2 LED, amber 637-131

11* 2 LED, Green 637-132

12 2 Push-button, Universal 6000506

13 1 Switch, Spring Return Selector, 2 Position 632219

14 3 Body, Mounting collar 6000515

15 2 Block, contact, Normally Open 6000516

16 1 Block, contact, Normally closed 6000517

17 1 Operating Label (not shown) 6000534

18 2 Terminal, Endplate (not shown) 6000539

19 1 Plain Marker (not shown) 6000540

20 4 Terminal, 2 conductor 6000542

21 1 SL60-90 Input Board assembly 6003313

22 1 SL60-90 Output Board assembly 6003314

23 2 18 Pole female Backplate Panel Mount Plug (not shown) 6003315

24 1 9 Pole female field Terminal 6003316



27 3 Push-button for Wago field Terminals (not shown) 6003319

28 1 120V High Visibility Exterior Lights Kit (Optional) 6003336

29 1 auxilliary Power Down Plug and cable (not shown) 823206

30 1 SERcO® Label - Standard for SL60-80 921-192

31 1 audible alarm Kit (Optional on SL60-80, Standard on SL90) 6003335

32 N/S counter (Optional on SL70, SL80) aP2712

33 N/S Heater Kit (Optional) 6003334* 2 each included in replacement bulb kit 637-144 LRU package.


paRTs lIsT — conTRol panel, continuedKeypad Release and Override

1

4

531

69

710

3

121415

811

20

2

21

25 26

28

30

2224

16

13

fig. 35


paRTs lIsT — conTRol panel, continuedKeypad Release and Override

Item quantity part description part number 1 1 Transformer 350Va 120 - 24Volt 6000443

2 1 Gould cc class fuse holder 6003299

3 1 cc class fuse 4 amps fNQ-R-4

4 1 TWIDO PLc 6001056

5 1 connector, cinch (aux. Powerup for Restraint) 632266

6 1 Light, Truck, Red 6000529

7 1 Light, Truck, yellow 6000530

8 1 Light, Truck, Green 6000531

9* 2 LED, Red 637-130

10* 2 LED, amber 637-131

11* 2 LED, Green 637-132

12 2 Push-button, Universal 6000506

13 1 Expansion Module (8 Source Out) 6001054

14 3 Body, Mounting collar 6000515

15 2 Block, contact, Normally Open 6000516

16 1 12-Key Keypad (Telephone format) 6001052

17 1 Operating Label (not shown) 6000534

18 2 Terminal, Endplate (not shown) 6000539

19 1 Plain Marker (not shown) 6000540

20 4 Terminal, 2 conductor 6000542

21 1 SL60-90 Input Board assembly 6003313

22 1 SL60-90 Output Board assembly 6003314

23 2 18 Pole female Backplate Panel Mount Plug (not shown) 6003315




27 3 Push-button for Wago field Terminals (not shown) 6003319

28 1 120V High Visibility Exterior Lights Kit (Optional) 6003336

29 1 auxilliary Power Down Plug and cable (not shown) 823206

30 1 SERcO® Label - Standard for SL90 6003130

31 1 audible alarm Kit (Optional on SL60-80, Standard on SL90) 6003335

32 N/S counter (Optional on SL70, SL80) aP2712

33 N/S Heater Kit (Optional) 6003334* 2 each included in replacement bulb kit 637-144 LRU package.


paRTs lIsT — InpUT/oUTpUT boaRds

FLASHEXTERIOR LIGHTS

NOFLASH

OFF

JUMPERS

1 2 3 4 5

5 4 3 2 1

ON

ON

1

4

7

5

6

8

9103

12

13

1614 15

11

19 20

21

17

25

18

22

24

23

2

fig. 36


paRTs lIsT — InpUT/oUTpUT boaRds, continued

Item quantity part description part number 1 1 complete Sl Input card assy. 6003313

2 1 PLc Interface Header* —

3 1 Input card Power Supply fuse LED* —

4 1 Input card Power Supply fuse- 0.25a 3aG 0.25a

5 1 Dip Switch - Input Option Selection* —

6 1 field Terminal connector* —

7 1 Manufacturing Terminal connector* —

8 1 Input Expansion* —

9 1 9 Position field Terminal Block 6004803


11 1 complete SL60-90 Output card assembly 6003314

12 1 PLc Interface Header* —

13 1 actuator Supply fuse - 15 aMP aST 15a 32V

14 1 actuator fuse LED Indicator* —

15 1 Outside Lights Supply LED Indicator* —

16 1 Inside Lights Supply LED Indicator* —

17 1 Outside Lights flasher control Switch* —

18 1 Raise and Lower control Relays* —

19 1 Optional audible alarm Kit Socket* —

20 1 Optional Restraint Heater Kit Socket* —

21 1 field Terminal connector* —

22 1 Manufacturing Terminal connector* —

23 1 Output Expansion card Port* —

24 1 field Terminal Opening Push Lever 6004806


* Included in Assy. 6003313


paRTs lIsT — exTeRIoR sIgns and lIghTs

Item quantity part description part number 1 1 Outside Sign - Normal Lettering 709-832

2 1 Light Assembly - Complete (Traffic Lights) 8-9519

3* 2 Light Bulb 120V, 69 Watt 823-072

4* 1 Lens - Red 823-043

5* 1 Lens - Green 823-044

6* 2 Visor 823-042

7 1 Light assembly - complete (LEDs) 823-190

8† 1 Red LED Light assy. 6001399

9† 1 Green LED Light assy. 6001400

11-3/4"

4"6-1/4"

20"

14"12"

24"

9"

1

4

7

5

6

8

9

3

2

* Part of Item 2 (Light Assembly – Complete).

† Part of Item 7 (Light Assembly – Complete).

fig. 37


lIMITed waRRanTy InfoRMaTIon

SERcO® warrants that this VEHIcLE RESTRaINT will be free from defects in material and workmanship under normal use for a period of one (1) year from the earlier of 1) 60 days after the date of initial shipment by SERcO®, or 2) the date of installation of the VEHIcLE RESTRaINT by the original purchaser, provided that the owner maintains and operates the VEHIcLE RESTRaINT in accordance with this Owner’s Manual. In the event that this VEHIcLE RESTRaINT proves defective in material or workmanship within the applicable limited warranty period, SERcO® will, at its option:

1. Replace the VEHIcLE RESTRaINT, or the defective portion of either, without charge to the owner (excluding any cost of removal or reinstallation which shall be the sole responsibility of the purchaser); or

2. alter or repair the VEHIcLE RESTRaINT, on site or elsewhere, without charge to the owner.

The limited warranty stated in the preceding paragraph IS EXcLUSIVE aND IT IS IN LIEU Of aNy OTHER GUaRaNTEES aND WaRRaNTIES, EXPRESS OR IMPLIED. The limited warranty does not cover any failure caused by improper installation, abuse, negligence, or failure to maintain and adjust the VEHIcLE RESTRaINT properly. Parts requiring replacement due to damage resulting from vehicle impact, abuse, or improper operation are not covered by this warranty. SERcO® disclaims any responsibility or liability for any loss or damage (including, without limitation, direct, indirect or consequential damages, or lost profits or production time) that results from the use of unauthorized replacement parts or modification of the VEHICLE RESTRAINT. SERCO® sole obligation with regard to a VEHIcLE RESTRaINT that proves to be defective in material or workmanship shall be as set forth in its standard warranty above (i.e., SERcO® will, at its option, repair or replace the VEHIcLE RESTRaINT or portion thereof, without charge to the purchaser.).

This limited warranty does not cover any failure caused by improper installation, abuse, negligence, or failure to properly maintain and adjust the VEHIcLE RESTRaINT. This limited warranty will be void or of no effect if the original purchaser does not notify SERcO® warranty department within ninety (90) days after the product defect is discovered. Parts requiring replacement due to damage resulting from vehicle impact, abuse, or improper operation are not covered by this warranty. SERcO® disclaims any responsibility or liability for any loss or damage that results from the use of unauthorized replacement parts or modification of the VEHICLE RESTRAINT.

TheRe aRe no waRRanTIes, expRess oR IMplIed, whIch exTend beyond The descRIpTIon on The face heReof, and TheRe Is no waRRanTy of MeRchanTabIlITy oR of fITness foR a paRTIcUlaR pURpose.

seRco® warranties extend only to the VehIcle ResTRaInT itself.

seRco® dIsclaIMs all warranties, express or implied, responsibility or liability for loss or damage of any kind associated with the installation or maintenance of the VehIcle ResTRaInT, including any liability for premature product wear, product failure, property damage or bodily injury arising from improper installation or maintenance of the VehIcle ResTRaInT.

your local SERcO® distributor is:

Please direct questions about your vehicle restraint to your local distributor or to SERcO® Services.

Corporate Head Office:

1612 Hutton Dr. Suite 140carrollton, TX. 75006Tel. (972) 466-0707fax (972) 323-2661

©2007 4front Engineered Solutions, Inc. SERcO® Part No. 824-231E

PitBull SafETy-LOc SL60, SL70, SL80 and SL90

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Transcript of PitBull SafETy-LOc SL60, SL70, SL80 and SL90